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EC Number
Protein Variants
Commentary
Reference
2.8.1.B3
C108/202/207/344A
the mutant enzyme is 2900fold less active than the wild-type enzyme
691755
2.8.1.B3
C108A
mutation has no significant effect on ThiI activity
692956
2.8.1.B3
C108A/C202A/C207A
the mutant is fully active
739607
2.8.1.B3
C202A
mutation has no significant effect on ThiI activity
692956
2.8.1.B3
C344A
mutation results in the loss of function in vivo and a 2700fold reduction in activity measured in vitro
692956
2.8.1.B3
C456A
mutation impairs this sulfurtransferase activity. ThiI is incapable of supporting generation of 4-thiouridine in tRNA both in vitro and in vivo
691754
2.8.1.B3
C456S
the mutant is not able to restore growth of a thiI mutant strain in minimal medium suggesting that C456 is required for thiazole synthesis in vivo
725262
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